diff --git a/TestAssets/DesktopTestProjects/BindingRedirectSample/AppWithRedirectsAndConfig/project.json b/TestAssets/DesktopTestProjects/BindingRedirectSample/AppWithRedirectsAndConfig/project.json
index b1a944ad2..bad344e19 100644
--- a/TestAssets/DesktopTestProjects/BindingRedirectSample/AppWithRedirectsAndConfig/project.json
+++ b/TestAssets/DesktopTestProjects/BindingRedirectSample/AppWithRedirectsAndConfig/project.json
@@ -15,7 +15,7 @@
     "dotnet-desktop-binding-redirects": "1.0.0-*"
   },
   "frameworks": {
-    "net451": {}
+    "net46": {}
   },
   "tools": {
     "dotnet-dependency-tool-invoker": {
diff --git a/TestAssets/DesktopTestProjects/BindingRedirectSample/AppWithRedirectsNoConfig/project.json b/TestAssets/DesktopTestProjects/BindingRedirectSample/AppWithRedirectsNoConfig/project.json
index b1a944ad2..bad344e19 100644
--- a/TestAssets/DesktopTestProjects/BindingRedirectSample/AppWithRedirectsNoConfig/project.json
+++ b/TestAssets/DesktopTestProjects/BindingRedirectSample/AppWithRedirectsNoConfig/project.json
@@ -15,7 +15,7 @@
     "dotnet-desktop-binding-redirects": "1.0.0-*"
   },
   "frameworks": {
-    "net451": {}
+    "net46": {}
   },
   "tools": {
     "dotnet-dependency-tool-invoker": {
diff --git a/TestAssets/DesktopTestProjects/DesktopAppWhichCallsDotnet/project.json b/TestAssets/DesktopTestProjects/DesktopAppWhichCallsDotnet/project.json
index 3657f28d1..68c977b23 100644
--- a/TestAssets/DesktopTestProjects/DesktopAppWhichCallsDotnet/project.json
+++ b/TestAssets/DesktopTestProjects/DesktopAppWhichCallsDotnet/project.json
@@ -9,6 +9,15 @@
     "emitEntryPoint": true
   },
   "frameworks": {
-    "net451": {}
+    "net46": {
+      "frameworkAssemblies": {
+        "System.Runtime": {
+          "type": "build"
+        },
+        "System.IO": {
+          "type": "build"
+        }
+      }
+    }
   }
 }
\ No newline at end of file
diff --git a/TestAssets/TestProjects/ProjectsWithTests/MultipleFrameworkProject/project.json b/TestAssets/TestProjects/ProjectsWithTests/MultipleFrameworkProject/project.json
index d6f73e3a4..9c6f64cbe 100644
--- a/TestAssets/TestProjects/ProjectsWithTests/MultipleFrameworkProject/project.json
+++ b/TestAssets/TestProjects/ProjectsWithTests/MultipleFrameworkProject/project.json
@@ -20,7 +20,7 @@
         "System.Runtime.Serialization.Primitives": "4.1.1"
       }
     },
-    "net451": {}
+    "net46": {}
   },
   "testRunner": "xunit"
 }
diff --git a/build/Microsoft.DotNet.Cli.Test.targets b/build/Microsoft.DotNet.Cli.Test.targets
index af29cd473..b8de69a9c 100644
--- a/build/Microsoft.DotNet.Cli.Test.targets
+++ b/build/Microsoft.DotNet.Cli.Test.targets
@@ -175,7 +175,7 @@
     <Message Text="%(NoAutoBuildDesktopTestAssetProjects.FullPath)" />
 
     <DotNetBuild  Configuration="$(Configuration)"
-                  Framework="net451"
+                  Framework="net46"
                   ProjectPath="%(BuildableDesktopTestAssetProjects.FullPath)"
                   ToolPath="$(DotnetUnderTest)"
                   WorkingDirectory="%(BuildableDesktopTestAssetProjects.RelativeDir)" />
diff --git a/build/test/TestPackageProjects.targets b/build/test/TestPackageProjects.targets
index 3cf7a2dc8..bd42b2ea8 100644
--- a/build/test/TestPackageProjects.targets
+++ b/build/test/TestPackageProjects.targets
@@ -159,7 +159,7 @@
         <VersionPrefix>1.0.0-preview3-</VersionPrefix>
         <VersionSuffix>$(TestPackageBuildVersionSuffix)</VersionSuffix>
         <Clean>False</Clean>
-        <Frameworks>net451;netstandard1.6</Frameworks>
+        <Frameworks>netstandard1.3</Frameworks>
       </BaseTestPackageProject>
       <BaseTestPackageProject Include="src/Microsoft.DotNet.ProjectModel">
         <Name>Microsoft.DotNet.ProjectModel</Name>
@@ -168,7 +168,7 @@
         <VersionPrefix>1.0.0-rc4-</VersionPrefix>
         <VersionSuffix>$(TestPackageBuildVersionSuffix)</VersionSuffix>
         <Clean>False</Clean>
-        <Frameworks>net451;netstandard1.6</Frameworks>
+        <Frameworks>netstandard1.3</Frameworks>
       </BaseTestPackageProject>
       <BaseTestPackageProject Include="src/Microsoft.DotNet.ProjectModel.Loader">
         <Name>Microsoft.DotNet.ProjectModel.Loader</Name>
@@ -186,7 +186,7 @@
         <VersionPrefix>1.0.0-preview3-</VersionPrefix>
         <VersionSuffix>$(TestPackageBuildVersionSuffix)</VersionSuffix>
         <Clean>False</Clean>
-        <Frameworks>netstandard1.6</Frameworks>
+        <Frameworks>netstandard1.3</Frameworks>
       </BaseTestPackageProject>
       <BaseTestPackageProject Include="src/Microsoft.DotNet.InternalAbstractions">
         <Name>Microsoft.DotNet.InternalAbstractions</Name>
@@ -195,7 +195,7 @@
         <VersionPrefix>1.0.1-beta-</VersionPrefix>
         <VersionSuffix>$(TestPackageBuildVersionSuffix)</VersionSuffix>
         <Clean>False</Clean>
-        <Frameworks>net451;netstandard1.3</Frameworks>
+        <Frameworks>netstandard1.3</Frameworks>
       </BaseTestPackageProject>
       <BaseTestPackageProject Include="src/Microsoft.Extensions.Testing.Abstractions">
         <Name>Microsoft.Extensions.Testing.Abstractions</Name>
@@ -204,7 +204,7 @@
         <VersionPrefix>1.0.0-preview3-</VersionPrefix>
         <VersionSuffix>$(TestPackageBuildVersionSuffix)</VersionSuffix>
         <Clean>False</Clean>
-        <Frameworks>net451;netstandard1.6</Frameworks>
+        <Frameworks>netstandard1.3</Frameworks>
       </BaseTestPackageProject>
       <BaseTestPackageProject Include="src/Microsoft.DotNet.Compiler.Common">
         <Name>Microsoft.DotNet.Compiler.Common</Name>
@@ -213,7 +213,7 @@
         <VersionPrefix>1.0.0-preview3-</VersionPrefix>
         <VersionSuffix>$(TestPackageBuildVersionSuffix)</VersionSuffix>
         <Clean>False</Clean>
-        <Frameworks>netstandard1.6</Frameworks>
+        <Frameworks>netstandard1.3</Frameworks>
       </BaseTestPackageProject>
       <BaseTestPackageProject Include="src/Microsoft.DotNet.Files">
         <Name>Microsoft.DotNet.Files</Name>
@@ -222,7 +222,7 @@
         <VersionPrefix>1.0.0-preview3-</VersionPrefix>
         <VersionSuffix>$(TestPackageBuildVersionSuffix)</VersionSuffix>
         <Clean>False</Clean>
-        <Frameworks>netstandard1.6</Frameworks>
+        <Frameworks>netstandard1.3</Frameworks>
       </BaseTestPackageProject>
       <BaseTestPackageProject Include="src/dotnet-compile-fsc">
         <Name>dotnet-compile-fsc</Name>
diff --git a/build/test/TestProjects.targets b/build/test/TestProjects.targets
index 10ce8141e..733b43e7c 100644
--- a/build/test/TestProjects.targets
+++ b/build/test/TestProjects.targets
@@ -86,7 +86,7 @@
       </TestProjects>
 
       <TestProjects Condition=" '%(RelativeDir)' == 'test\binding-redirects.Tests\' ">
-        <Framework>net451</Framework>
+        <Framework>net46</Framework>
       </TestProjects>
       <TestProjects Condition=" '%(RelativeDir)' == 'test\Installer\Microsoft.DotNet.Cli.Msi.Tests\' ">
         <Framework>net46</Framework>
diff --git a/src/Microsoft.Extensions.Testing.Abstractions/MetadataExtensions.cs b/src/Microsoft.Extensions.Testing.Abstractions/MetadataExtensions.cs
index e966a4c5a..68da748e6 100644
--- a/src/Microsoft.Extensions.Testing.Abstractions/MetadataExtensions.cs
+++ b/src/Microsoft.Extensions.Testing.Abstractions/MetadataExtensions.cs
@@ -1,6 +1,7 @@
 // Copyright (c) .NET Foundation and contributors. All rights reserved.
 // Licensed under the MIT license. See LICENSE file in the project root for full license information.
 
+using System;
 using System.Reflection;
 using System.Reflection.Metadata;
 using System.Reflection.Metadata.Ecma335;
@@ -9,11 +10,11 @@ namespace Microsoft.Extensions.Testing.Abstractions
 {
     internal static class MetadataExtensions
     {
+        private static PropertyInfo s_methodInfoMethodTokenProperty = typeof(MethodInfo).GetProperty("MethodToken");
+
         internal static int GetMethodToken(this MethodInfo methodInfo)
         {
-            var methodToken = methodInfo.MetadataToken;
-
-            return methodToken;
+            return (int)s_methodInfoMethodTokenProperty.GetValue(methodInfo);
         }
 
         internal static MethodDebugInformationHandle GetMethodDebugInformationHandle(this MethodInfo methodInfo)
diff --git a/src/Microsoft.Extensions.Testing.Abstractions/project.json b/src/Microsoft.Extensions.Testing.Abstractions/project.json
index 6f69481c4..63c42f277 100644
--- a/src/Microsoft.Extensions.Testing.Abstractions/project.json
+++ b/src/Microsoft.Extensions.Testing.Abstractions/project.json
@@ -16,7 +16,7 @@
     "System.Reflection.Metadata": "1.4.1-beta-24426-02"
   },
   "frameworks": {
-    "netstandard1.5": {
+    "netstandard1.3": {
       "imports": [
         "portable-net45+wp80+win8+wpa81+dnxcore50",
         "portable-net45+win8"
diff --git a/test/Microsoft.DotNet.Tools.Tests.Utilities/project.json b/test/Microsoft.DotNet.Tools.Tests.Utilities/project.json
index a6f3307b4..5c099fa74 100644
--- a/test/Microsoft.DotNet.Tools.Tests.Utilities/project.json
+++ b/test/Microsoft.DotNet.Tools.Tests.Utilities/project.json
@@ -30,7 +30,7 @@
       "System.Collections.Immutable": "1.2.0-rc2-24022",
       "System.Net.NetworkInformation": "4.1.0-rc2-24022"
     },
-    "net451": {
+    "net46": {
       "frameworkAssemblies": {
         "System.Runtime": {
           "type": "build"
diff --git a/test/binding-redirects.Tests/project.json b/test/binding-redirects.Tests/project.json
index ad9614b43..4e363a4bc 100644
--- a/test/binding-redirects.Tests/project.json
+++ b/test/binding-redirects.Tests/project.json
@@ -9,7 +9,7 @@
     }
   },
   "frameworks": {
-    "net451": {
+    "net46": {
       "frameworkAssemblies": {
         "System.Configuration": ""
       }